Platform Environmental Control Interface (Peci) - Intel Q9450 - Core 2 Quad Quad-Core Processor Design Manual

Design guidelines

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4.2.10

Platform Environmental Control Interface (PECI)

The PECI interface is a proprietary single wire bus between the processor and the

chipset or other health monitoring device. At this time the digital thermal sensor is the

only data being transmitted. For an overview of the PECI interface see PECI Feature

Set Overview. For additional information on the PECI, see the Datasheet.

The PECI bus is available on pin G5 of the LGA 775 socket. Intel chipsets beginning

with the ICH8 have included PECI host controller. The PECI interface and the

Manageability Engine are key elements to the Intel

(Intel

QST), see Chapter 6 and the Intel

Configuration and Tuning Manual.

Intel has worked with many vendors that provide fan speed control devices to provide

PECI host controllers. Consult the local representative for your preferred vendor for

their product plans and availability.

Thermal Management Logic and Thermal Monitor Feature

Quiet System Technology (Intel

Thermal and Mechanical Design Guidelines

Quiet System Technology

QST)

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